jon? jon: all right. it's going to be all kinds of developments yet to come on in this one, i think. claudia cowan, thank you. jenna: well, mcdonald's taking some big changes to its popular happy meal menu. the fast food giant announcing today it will add a serving of fruit or vegetables to all its happy meals. wait a minute, don't you get lettuce and tomatoes on the burger? mickey d's also doing something to those fries. mike tobin is live from chicago. mike, doing the research that needs to be done? [laughter] >> reporter: well, yes. you need to do some field research at mcdonald's. you know, jenna, with the current happy meal parents or kids have had the option of choosing french fries or apples. only 11% of the consumers were actually choosing the apples. so by april nationwide when someone buys a happy meal, they'll get both a half order of apples and a half order of french fries. fewer fries means less fat. also the option of produce is going to be presented to kids each time they clamor for that to